Boosted Mp3!!!

[Kooldino]

right after the turbo

That *may* be inaccurate. I think I recall reading in the UEGO manual that it had to be 12-20" away or something. Anyone have their manual handy?

 

[Kooldino]

Btw, if your wideband is there, then where is your primary O2?

 

[PaulMP3]

I just took my car for another ride.

in 3rd gear aproaching redline im at 11.7 a/f but..... i hit 800 celcius??? which is too high.

i have been staying out of boost, except for when testing my WBO2.

 

[igdrasil]

I just took my car for another ride.

in 3rd gear aproaching redline im at 11.7 a/f but..... i hit 800 celcius??? which is too high.

i have been staying out of boost, except for when testing my WBO2.

WHOAH! thats high

Check out my probe in the downpipe.
I have never reached over 630C in my car. On the track, on the streets, cruising on boost and out of boost.
NEVER!
But...it builds 600C fast, and my warning light is set to 620C

 

[igdrasil]

Download my video and watch the EGT gauge. Video quality is not that good but it tells everything. It goes to 600C fast between 1st and 2nd gear and stays there in 3rd and 4th gear...
Watch my EGT, right gauge

 

[jaje]

i adjusted my fmu last night. now while boost is building sometimes i am in the 13's but once at full boost it stay around 11. I think im safe now, or should i turn it up a lil more? Hopefully i didnt do any damage. the car feels more powerfull already. Hopefully i will have engine mgmt within the next month or so, i am just waiting for all these products to get released.

JAJE, how far in is the screw on top of ur FMU in. Mine only has about 1/4" left to go.

sound like you got the fmu adjusted now...did you do the air hose check and see the gain in fuel pressure you are getting?

 

[blynzoo]

also my highest EGT while boosting is about 800 celcius.

thanks for the comments and the help.

Another sign you are lean. You want to be well below 700. I would think about 630-650 would be comfortable, prob just barely richer than you need.

 

[Little Beavis]

He has the EGT in the manifold, so his readings will be higher than 600-650. They should be in the neighborhood of 730 or so.

If you get 11.7 at boost, you should be good. (Obviously better than 14!). What other readings to you get, partial throttle is the killer, so you want to be at 12 or so when you're doing partial throttle. Also watch the low boost (0-1 psi), you're likely to go lean there, kind of a touchy spot. But, luckily, it isn't too dangerous in that range. . .you can be closer to 13. I like most people am still pig rich, but it is safe. . .

What do you have to keep the ECU from pulling fuel? A voltage clamp like the rest of us?

Glad to hear you're not running stoich at boost. . .that was scary (even for me). . .I kept saying. . .oh no. . .I hope he's okay.

To Kooldino's point, the Uego manual does say to move it away, so he's correct, but I run mine pretty close as well (just had the bung there already). I think you'll be okay.

Enjoy!

 

[Darin]

@ WOT you should be hotter than 1250.

I calculated a bit higher than 1400F w/ the conversion utility I ran. Either way, be careful.

The safe limit-lie I believe is 900C or 1500F...

 

[PaulMP3]

I just got off the phone with andy, and he says the WBO2 is fine there. He thinks we are getting bad EGT readings, and trusts the WBO2.

I noticed that i can hit 700C just crusing not in boost... in 4th gear at about 3k.

Also i have a good amount of carbon build up on my exhaust.


my WB seems to jump around a lil but once im at steady boost it hasnt been above 12.4

 

[PaulMP3]

Btw, if your wideband is there, then where is your primary O2?

in the collector.

 

[PaulMP3]

WHOAH! thats high

Check out my probe in the downpipe.
I have never reached over 630C in my car. On the track, on the streets, cruising on boost and out of boost.
NEVER!
But...it builds 600C fast, and my warning light is set to 620C

the fact that yours is in the DP is why are readings may be so different.

If i remember correctly i think spoolin said you can expect 200 degrees lower temps if placed in the DP.

 

[PaulMP3]

What do you have to keep the ECU from pulling fuel? A voltage clamp like the rest of us?

Glad to hear you're not running stoich at boost. . .that was scary (even for me). . .I kept saying. . .oh no. . .I hope he's okay.

Enjoy!

i have a Voltage clamp.


I have been so nervous myself. I think im in a safe range now.



Thanks to everyone who is helpin me out, Im new to this and i dont want to learn the hard way.

 

[PaulMP3]

all you need to do is loosen the nut, take an allen wrench...next blow some air into the boost input on the fmu (should be on top) and look at your fuel pressure gauge to see what it reads...if andy did yours like mine then it is only for the fuel pressure you get from the fmu and not total fuel pressure (stock system)...you want around 60-70 psi added and just turning the allen key clockwise will allow you to adjust it

I will try this, my air compressor is broken. I will give this a try soon. i remember andy doing this to your car, i watched him. As of now that little screw is all the way in. which he said has my fuel pressure all the way up.

 

[igdrasil]

hey...

what fmu u have and how you adjust it?


another thing...
please confirm that your egt probe is in the downpipe or in the collector...if its in the collector, 800C is good

 

[PaulMP3]

hey...

what fmu u have and how you adjust it?


another thing...
please confirm that your egt probe is in the downpipe or in the collector...if its in the collector, 800C is good

i have a cartech FMU, very similar to the Flyin protege FMU.


I posted b4 that it is in my collector. about 3-4" from the engine.

 

[jaje]

I will try this, my air compressor is broken. I will give this a try soon. i remember andy doing this to your car, i watched him. As of now that little screw is all the way in. which he said has my fuel pressure all the way up.

your af is around the low 12s under boost which is good so it looks like your in the safe zone...you probably are at 50-60 lbs extra supplied by the fmu

 

[igdrasil]

your af is around the low 12s under boost which is good so it looks like your in the safe zone...you probably are at 50-60 lbs extra supplied by the fmu

Yep, keep in mind, that boosting on 13:1 ratio is the most dangerous situation. This is where more heat the engine is producing. Even worse than 14:1

I have experienced this, higher A/F ratios will build heat in a blink of an eye, but 13:1 being the worse situation and I dont know why, I will do my research.

 

[PaulMP3]

Last night when driving everything seemed fine i was boosting at 12:1 or lower. But during normal cruising when i took my foot off the gas i got a ERH but as soon as i touch the pedal it went back to 10:1 than jumps up to 12-14:1. So i took it out today after work, and it was still doing this, i wouldnt allow it to do it for long because i know it could be bad. I was thinking my WB is acting up or something else was going on, so i reset the ECU. Now while idiling i get ERL for the first 20 secs then it works its way up to 14.7:1. I am assuming it is just setting up. But i am still getting the ERH. WTF i know its not during boost but should i still be worried. Also after i reset the ECU i have been stalling alot after i get on it then let off (even when not in boost) I think it may be the ECU learning, b/c this was happening b4 but stopped after a lil driving. Also since the ECU resetting i am running way richer than b4 like 10.4:1 or lower usually ERL. Maybe it was doing this b4 and i just didnt notice.

Any clue whats going on??

 

[igdrasil]

Thats because the injectors stop sending fuel, they shutoff, as soon as you let the gas off...then when idling it jumps because it launches fuel again to compensate for a stable idle.